English Community

Lenovo NotebooksLenovo Yoga Series Notebooks
All Forum Topics
Options

14 Posts

11-11-2019

NL

36 Signins

227 Page Views

  • Posts: 14
  • Registered: ‎11-11-2019
  • Location: NL
  • Views: 227
  • Message 21 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-11-29, 20:29 PM

Can somebody from Lenovo clarify if it is possible to change over usb c on the 15" c940 and of yes based on what specs? If not, will it ever be possible?

Reply
Options

5 Posts

11-26-2019

US

5 Signins

38 Page Views

  • Posts: 5
  • Registered: ‎11-26-2019
  • Location: US
  • Views: 38
  • Message 22 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-01, 0:57 AM

My C940 14" worked with a Dell Thunderbolt Dock - WD19TB.  Laptop connected, found all the attached devices (mouse, hdmi monitor), and started charging.

 

the Dell dock came with a 180W with up to 130W delivered to a Dell or 90W to a non-Dell computer, either at @ 19.5V, 9.23A.

 

 

Reply
Options

3 Posts

12-18-2019

LT

1 Signins

63 Page Views

  • Posts: 3
  • Registered: ‎12-18-2019
  • Location: LT
  • Views: 63
  • Message 23 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-18, 23:42 PM

Intresting c940 got BIOS update to his charge funcion... its not full rapid charge 

Reply
Options

129 Posts

12-08-2019

US

177 Signins

1414 Page Views

  • Posts: 129
  • Registered: ‎12-08-2019
  • Location: US
  • Views: 1414
  • Message 24 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-19, 1:50 AM

Hey Johnli can you confirm if the dock charges your c940 quicker than the 65 watt charger? Interested in faster charging rates cuz the 65 watt charger charges only at a 15 wh rate and takes 3.5 hours to full charge from 0%. If you can confirm a quicker charge I'd pick up a 130 watt charger instant lol. 

Reply
Options

5 Posts

11-26-2019

US

5 Signins

38 Page Views

  • Posts: 5
  • Registered: ‎11-26-2019
  • Location: US
  • Views: 38
  • Message 25 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-19, 2:36 AM

Regarding if my yogo charges faster because the docking station wattage is higher, I haven't done any time tests.  However, I think my yoga charges faster with the higher wattage.

 

Because I think it charges faster, I am concerned with leaving my yoga docked and having the battery continuously charged to 100%.

 

So, I use the Lenova battery management app to charge to 55-65% max.  If I need the full 100% because I need to go "off dock",  I simply change the setting to charge to 100%.  I undock after hitting 100% charge, and it is definitely less than 1 hour.

 

I never carry the yoga power adapter, because the laptop can go 10+ total hours nonstop (I use the common battery saving approaches, and my use isn't CPU intensive).  I went one week on travel, used the laptop a few hours nightly, never worried about running out of battery.

Reply
Options

37 Posts

12-18-2019

US

32 Signins

360 Page Views

  • Posts: 37
  • Registered: ‎12-18-2019
  • Location: US
  • Views: 360
  • Message 26 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-20, 5:58 AM

@jonhli - Thanks for posting this, I've just ordered a tb19 based on your recommendation.

 

Why cap the charge at 55%? I would think the battery should be fine at capacity. Any pointers on the "Lenovo batter management" app? where is that and is it cumbersome to switch between? 

 

That's impressive battery run times - I guess you don't have the 4k screen?

 

ANyways, thanks again for the tip about the tb19

Reply
Options

5 Posts

11-26-2019

US

5 Signins

38 Page Views

  • Posts: 5
  • Registered: ‎11-26-2019
  • Location: US
  • Views: 38
  • Message 27 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-20, 6:36 AM

Yep, didn't get the 4K.  I couldn't tell the difference and the 4K was useless when docked with my large monitor.

 

Lenovo Vantage is their system mangement app.  The icon was already pinned on my taskbar when I got the laptop.  It's a nice app, excluding the ads, and in the menu there's a device settings option.

 

The battery management is either on or off.  If off, then the battery charges to 100%.  If set on, then Lenovo limits charge to 55% automatically.  The tooltip indicated 55% was the best config for maxing battery life.  I just accepted what it said and didn't research to see if I could choose a diff %.

 

if you are buying a dock, don't forget the dock will consume (distribute?) some power to any ports it has.  Just another reason why I got a larger charger, to ensure I netted at least 65W to the laptop.

Reply
Options

599 Posts

05-24-2018

CA

1231 Signins

9100 Page Views

  • Posts: 599
  • Registered: ‎05-24-2018
  • Location: CA
  • Views: 9100
  • Message 28 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-24, 2:14 AM

According to the reviewer, the 130W USB-C charger from DELL can charge the C940 15". I hestitate to do it. Anybody brave enough to try?

 

https://www.neowin.net/news/lenovo-yoga-c940-15-review-the-rare-workhorse-convertible/

 

 

Reply
Options

129 Posts

12-08-2019

US

177 Signins

1414 Page Views

  • Posts: 129
  • Registered: ‎12-08-2019
  • Location: US
  • Views: 1414
  • Message 29 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-24, 2:25 AM

If I owned a c940 15 I would've gone to Best Buy and tried it out myself for you guys, but even then, my Best Buy is weird enough that it doesn't work the Dell XPS line, so no 130 watt USB-C charger available to try out ¯\_(ツ)_/¯ hence why I keep looking for someone to try it out with their 14 inch c940 (which is the one I have) for me. 

Reply
Options

5554 Posts

06-27-2008

US

28465 Signins

1626807 Page Views

  • Posts: 5554
  • Registered: ‎06-27-2008
  • Location: US
  • Views: 1626807
  • Message 30 of 54

Re: Lenovo c940 - Charging via USB-C?

2019-12-24, 2:29 AM

 wrote:

According to the reviewer, the 130W USB-C charger from DELL can charge the C940 15". I hestitate to do it. Anybody brave enough to try?

 

https://www.neowin.net/news/lenovo-yoga-c940-15-review-the-rare-workhorse-convertible/

 


It is not reasonable to ask others to do that which you hesitate to do. Especially where power/charging is concerned, using off-brand power adapters that might endanger others' warranties.

 

All are advised to be cautious.

 

Regards.


Community GuidelinesSearchPrivate MessagingENDEESPTRUUACZ-SKTRMoto
PM requests for individual support are not answered. If a post solves your issue, please mark it so.

I am not a Lenovo employee

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save